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Finding the Fourth Proportional to 13,843.21, 20,743.55 and 9,395.09

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Solution

The fourth proportional to 13,843.21, 20,743.55 and 9,395.09 is: 14,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.21 : 20,743.55 = 9,395.09 : x
  2. Step 2: Convert to fraction form
    13,843.21/20,743.55 = 9,395.09/x
  3. Step 3: Cross multiply
    13,843.21x = 20,743.55 × 9,395.09
  4. Step 4: Simplify right side
    13,843.21x = 194,887,559.28
  5. Step 5: Solve for x
    x = 194,887,559.28/13,843.21
  6. Step 6: Final answer
    x = 14,078.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.